Snap refresh error x509: certificate signed by unknown authority

snapd
1

Hello,

we are using a ubuntu 18.04 server with snap installed.
If we try to refreh our snaps (core and rocketchat) we get the error
x509: certificate signed by unknown authority

I did a apt get update and apt-get upgrade and all packages are up to date.
I searched for this error and i found some things about self sigend certificates.

but if i do a snap refresh the only ssl certificate that is checked, is the snapcraft.io ssl certificate and the trusted root certificates on the ubuntu server should be refreshed automatically, isnt it?

How can i solve the problem because i need to update our rocketchat version.

Thank you very much.
Best regards

2

Problem solved

The file /etc/ca-certificates.conf was modified and all mozilla root CAs are removed with a “!” at the beginning of the line.
I removed all “!” from the lines and ran update-ca-certificates. now all root certificates are copied to /etc/ssl/certs. After that i restart the snapd and the snaps can be refrehsed.